| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a fuel cell system which can diagnose failure of a specific part of an internal circuit of a DC-AC conversion means. <P>SOLUTION: The fuel cell system includes a fuel cell 11, the DC-AC conversion means 12 connected to a commercial power supply, converting DC power from the fuel cell 11 into AC power, and supplying the AC power to a house load 13 together with the commercial power supply, a phase shift measurement means 15 for measuring a phase shift between a current output from the DC-AC conversion means 12 to a load side and a commercial power supply voltage, and an operation control means 14 for controlling operation of the fuel cell 11, the DC-AC conversion means 12, and the phase shift measurement means 15. The operation control means 14 measures the phase shift between an output current waveform from the DC-AC conversion means 12 and the commercial power supply voltage by the phase shift measurement means 15. <P>COPYRIGHT: (C)2010,JPO&INPIT |
